So I’ve been vaping for almost a year now and for the past while ive been getting burnt throat hits and my tongue as well. I find it open happens when i begin to vape but after 3-4 hits it stops and it doesnt burn. I have an smok alien 220 and im currently using 12mg. I just started using 12mg this past week and before that i was using either 6 or 9. Is this normal or could it be something to do with the juice, vape or could it be the nicotine? The coil is also fine. Thanks for any help!